The stopping potential for photoelectric emission from a metal surface is plotted along Y-axis and frequency ν of incident light along X-axis. A straight line is obtained as shown. Planck's constant is given by

Question

The stopping potential for photoelectric emission from a metal surface is plotted along Y-axis and frequency ν of incident light along X-axis. A straight line is obtained as shown. Planck's constant is given by, slope of the line, product of slope of the line and charge on the electron, intercept along Y-axis divided by charge on the electron, product of intercept along X-axis and mass of the electron

MARKS App · Accepted Answer

Einstein's equation is V = hν e - hν 0 e Here, the slope of the line = h e ⇒ h = Planck's constant = slope × e

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